Assessment of the Residual Life of Steam Pipeline Material beyond the Computational Working Time
Marek Sroka,
Adam Zieliński,
Maria Dziuba-Kałuża,
Marek Kremzer,
Magdalena Macek,
Artur Jasiński
Affiliations
Marek Sroka
Division of Material Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego 18a, 44-100 Gliwice, Poland
Adam Zieliński
Institute for Ferrous Metallurgy, K. Miarki 12-14, 44-100 Gliwice, Poland
Maria Dziuba-Kałuża
Institute for Ferrous Metallurgy, K. Miarki 12-14, 44-100 Gliwice, Poland
Marek Kremzer
Division of Material Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego 18a, 44-100 Gliwice, Poland
Magdalena Macek
Division of Material Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego 18a, 44-100 Gliwice, Poland
Artur Jasiński
Energopomiar, J. Sowińskiego 3, 44-100 Gliwice, Poland
This paper presents the evaluation of durability for the material of repair welded joints made from (13HMF) 14MoV6-3 steel after long-term service, and from material in the as-received condition and after long-term service. Microstructure examinations using a scanning electron microscope, hardness measurements and creep tests of the basic material and welded joints of these steels were carried out. These tests enabled the time of further safe service of the examined repair welded joints to be determined in relation to the residual life of the materials. The evaluation of residual life and disposable life, and thus the estimation and determination of the time of safe service, is of great importance for the operation of components beyond the design service life. The obtained test results are part of the materials’ characteristics developed by the Institute for Ferrous Metallurgy for steels and welded joints made from these steels to work under creep conditions.
